i have a 1.6 sport astra mk4 and on start up there is a clicky noise from the engine bay which sometimes goes after warmin up abit, i read the cracked manifold post and it does sound like the same problem only if i rev it the noise sounds like it gets faster, at first i thought it could be like a cambelt fault or something because of the noise speeding up etc, has n e one else had a prob like that or does any of you know wot it is coz its doing my nut now!!
thanks in advance :? :? :?